The ratio of the number of boys to the number of girls is 3 : 7.
Each boy is given 6 stickers.
Each girl is given 2 stickers.
The total number of children is 100.
- How many stickers are given to the children?
- How many less boys than girls are there?
- How many less stickers are given to the girls than the boys?
|
Boys |
Girls |
Number |
3 u |
7 u |
Stickers for each person |
6 |
2 |
Total stickers |
18 u |
14 u |
(a)
Number of children
= 3 u + 7 u
= 10 u
10 u = 100
1 u = 100 ÷ 10 = 10
Total number of stickers
= 18 u + 14 u
= 32 u
= 32 x 10
= 320
(b)
Number of less boys than girls
= 7 u - 3 u
= 4 u
= 4 x 10
= 40
(c)
Number of less stickers are given to the girls than the boys
= 18 u - 14 u
= 4 u
= 4 x 10
= 40
Answer(s): (a) 320; (b) 40; (c) 40